<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8"/>
        <title>
            Object.defineProperty
        </title>
        <script type="text/javascript" src="../js/vue.js"></script>
    </head>
    <body>
        
        <div id="root">
            
        </div>
        <script type="text/javascript">
            let obj={x:100}
            let obj2={y:200}
            Object.defineProperty(obj2, 'x', {
                get(){
                    return obj.x
                },
                set(value){
                    obj.x=value
                }
            })
        </script>
    </body>
</html>